Some musicians swear they play and perform better while under the influence of....something....or a combination of things....Maybe they do or maybe they don't...it can be argued either way. But here's my experience: I play better with practice. Period. There's no magical formula, no magical drug that makes me play better. Practice. I sing better when my vocal chords are warmed up good. Practice. I write great songs when I take the TIME. Practice involves time. If I want to be good at something I have to give it the time it needs. That holds true for anything else in life we want to be good at. And since substances are something I need to stay away from, it just comes back to practice, not using any enhancing substance that make me play better. But, incidentally, I've know MANY musicians who don't use any substances and never have. My sister won't. She says alcohol would just mess up her playing.